Grease-gun.



A. T. WOOD.

5 GREASE GUN. APPLICATION TILED NOV. 4, 1910.

7 999,939, Patented Aug. 8,1911.

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stars rarer camera ALFRED T. V7001), OF DEFIANCE, OHIO.

GREASE-GUN.

Specification of Letters Patent.

Patented Aug. 8, 11911.

Application filed. November 4, 1910. Serial No. 590,763.

To all whom it may concern:

Be it known that I, ALFRED T. WOOD, a citizen of the United States, anda resident of Defiance, in the county of Defiance and State of Ohio,have invented a certain new and useful Grease-Gun; and I do herebydeclare the following'to be a full, clear, and exact description of theinvention, such as will enable others skilled in the art to which itappertains to make and use the same, reference being had to theaccompanying drawings, and to the figures of reference marked thereon,which form a part of this specification.

The invention relates to grease guns, and has for its object theprovision of an improved, simple and efficient device of this class,which is adapted to receive and hold a grease cartridge or package inwhich the grease is shipped from the manufacturer and sold to the user,in a manner enabling it to be easily and quickly secured within.

or removed from the gun or cartridge holder thus obviating the slow andunpleasant methods heretofore employed of filling of the grease barrelor receptacle of guns of this class by hand.

The invention is fully described in the following specification, andwhile in its broader aspect it is capable of embodiment in numerousforms a preferred embodiment thereof is illustrated-in the accompanyingdrawings, in which,-

Figure 1 is an elevation of a grease-gun embodying my invention with agrease carrying cartridge in position therein. Fig. 2 is a centrallongitudinal section of the gun and its cartridge with the latter partlybroken away, and Fig. 3 is an elevation of a grease-cartridge removedfrom the gun with portions thereof broken away.

Referring to the drawing, 1 designates the cartridge holder or body ofmy greasegun, which is of circular form in cross-section to provide a'seat for a grease-cartridge 2, and of a length substantially equal tothe length of such cartridge. One end of the holder 1 is provided with aconical or funnel-like part 3 and its other end is provided with acollar or ring-like part 4 into which a cartridge holding plug 5 may bethreaded. The conical part-3. of the gun is of suitable size to enablean end of a grease-cartridge 2 to seat against its marginal edge, andhas a nozzle 6 projecting from its contracted end for the purpose ofdirecting the grease to the desired point of discharge, said nozzlebeing preferably removably attached to the part 3 as shown.

A gasket 7, against which the edge of the forward open end of acartridge 2 is intended to seat, is carried by the part 3 and retainedto its seat therein by the cooperating action of the body 1 and a flange8 at the rear edgeof said part as shown. The plug 5 also carries agasket 9 which seats against the rear edge of a cartridge 2 when inposition within the gun, and forms a close seat between said plug andthe associated cartridge end when the plug' is screwed home within theholder. While the greasegun being of cylindrical form it may be of anyother suitable shape in crosssection as desired. The cartridge 2 has oneend closed by a cap 10 which is capable of being easily removedtherefrom, and has its opposite or rear end closedby a disk orbottom-piece 11 which is mounted for reciprocatory movements within thecartridge 2, in the manner of a plunger, and has its outward movementlimited by the inward rolling or fianging of the rear end of thecartridge 'wall, as indicated at 12. The inner side of the disk 11 isfaced with felt or other suitable material 13 which fits closely againstthe cartridge wall and prevents a leakage of grease from the cartridgearound the disk 11.

When a cartridge is placed within the I holder 1 the disk ll'is forcedtherethrough to efiect adischarge of grease from the cart-ridge throughthe part 3 and nozzle 6 or the gun by inward pressure on a plunger rod14 which works through a central opening in the plug 5 and carries aplate or plunger 15 at its inner end in contact with the outer side ofthe disk 11. When the plunger rod 14 is at the limit of its outwardmovement the plunger 15 thereof seats within a receiving socket 16 inthe inner side of the plug 5 so as not to interfere with a removal of acartridge from the holder when in register with the respective gaskets 7and 9, after which the plug 5 is screwed home within the holder, forcingthe forward or open end of the cartridge to its seat against the gasket7, to prevent leakage between said end and its seat, and to force thegasket 9 of the plug to its seat against the rear edge of the cartridge.To eject grease from the nozzle 6 the operator forces the plunger rod 14inwardly, which in turn acts on the disk 11 to force it through thepackage.

It is thus apparent that I have provided a simple and cheap grease-gun,from which an empty cartridge can be quickly removed and a filledcartridge substituted therefor, and that when a cartridge is secured inoperative position within the holder leakage is prevented around itsendedges due to the close seating of such edges against the gaskets 7and 9.

I wish it understood that my invention is not limited to any specificconstruction or arrangement of the parts except in so far as suchlimitations are specified in the claims.

' Having thus described my invention, what I claim as new and desire tosecureby Letters Patent, is,

1. The combination with a grease-cartridge having an open end, of aholder into Which such cartridge removably fits, said holder comprisinga body part having a discharge nozzle at one end and a plug receivingpart at its opposite end, a plug threaded into said part and adapted toact on the cartridge to force it to a close seat against said nozzlewith its open end in register with the nozzle bore, and means forforcing matter through said cartridge.

25A; grease-gun comprising a cartridge holder having a body partprovided at one end with a nozzle and at its other end with a part forholding a cartridge thrust meniher, a cartridge thrust member threadedinto said part, a gasket carried at the inner end of said nozzle, 2.grease-cartridge removably mounted within the holder and having an openend, the edge of which seats against said gasket, being held thereto bya screwing home of said thrust member, and plunger means for workingthrough the cartridge to force matter therefrom.

3. A grease-gun comprising, in combination, a body part having'oppositeend parts which cooperate therewith to removably I hold agrease-cartridgetherein, one of such ends forming a discharge nozzle, agrease cartridge removably mounted in said holder and having an end openand in register with the throat of said nozzle, and plunger means ceasescapable of working through the cartridge to force matter therefrom.

4:. A grease-gun comprising, in combination, a cartridge holder havingopposite end portions between which a cartridge may fit, and a partrigidly connecting said end portions and forming a seat for a side of acartridge, said end portions and part oooperating to removably hold acartridge,

and one of said end portion-s forming a discharge nozzle, a cartridgeremovably titted. within the holder and having an open end in registerwith the nozzle throat, said cartridge having an end-portion movabletherethrough, and means carried by the holder for forcing the endportion of said cartridge therethrough.

5. A grease-gun comprising, in combination, a cartridge holder having aconnecting part and opposite end portions, one of said end portionsforming a discharge noz' zle and the other a thrust member, a cartridgecapable of fitting within said holder between its end portions, saidcartridge having an open end seating against the nozzle portion inregister with its discharge throat, and an end portion in its oppositeend capable of movement therethrough, said cartridge being held to itsseat within the holder by thrust pressure thereon and plunger means forcoacting with the movable end portion of said cartridge to force itthrough the cartridge.

6. A grease-gun comprising in combination an elongated body portionwhich is concavoeconvex in cross-section to form a seat for a cartridgeand having a laterally offsetdischarge nozzle at one end and an axiallyregistering ring portionat its opposite end. a cartridge capable ofremovably seating within said holder, said cartridge having an open endseating against the nozzle portion thereof in register with the nozzlethroat and a part closing the opposite end thereof and capable ofmovement therethrough, a thrust plug threaded within the ring-portion ofsaid holder and adapted to cotiperate therewith to hold the cartridge toits seat thereinfand a plunger carried by said plug and adapted toco'act with the end member of said cartridge to force it through thecartridge.

In testimony whereof, I have hereunto signed my name to thisspecification in the presence of two subscribing witnesses.

ALFRED T. WOOD. Witnesses v K. Grows, A. Gnowno.

